/Engine/Plugins/Runtime/RigVM/Source/RigVMEditor/Public/Editor/RigVMEditor.h
virtual void OnActiveTabChanged ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > PreviouslyActive, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > NewlyActivated )